Washing machine



FIG. 1 is a top, front, perspective view of a washing machine showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a reference view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a washing machine, as shown and described. 